Bottle warmer and sterilizer



March 1935. M. s. ZISKIN ET AL BOTTLE WARNER AND STERILIZER Filed Sept. 12, 1951 INVENTORJ Manuei 6. Zia/c151 2 V/ciarlZ Z 72.

ATTORNEYS.

Patented Mar. 12, 1935 UNITED STATES PATENT OFFICE 1,994,206 H BOTTLE WARMER AND srsmuzm Application September 12, 1931, Serial No. 562,539

3 Claims.

The present invention, relating as indicated to a bottle warmer and sterilizer, is particularly directed to a new and improved device for use in heating and sterilizing containers, such for example as an open vessel for the heating of baby bottles and the like, and for sterilizing the same when empty. The principal object of the invention is the provision of an extremely simple and inexpensive device which may be employed to receive, hold and heat any one of the various common forms of bottles employed as nursing bottles. A further object of the invention is the provision of means for permitting the use of the device referred to above for sterilizing an empty bottle.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawing and the following description setting forth in detail certain structure embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing:-

Fig. 1 is a central longitudinal section through our improved device on the line 1-1, Fig. 3; Fig. 2 is a transverse central section showing our improved sterilizing attachment in position on the device of Figs. 1 and 2; Fig. 3 is a section on the line 3-3, Fig. 1; and Figs. 4, 5 and 6 are plan views showing various types of standard nursing bottles in position in the top of the receptacle.

Referring now to Fig. 1, there is shown an open inner receptacle 1 formed of porcelain or any other suitable material and provided with heating means disposed in the base of thereceptacle, consisting of spaced electrodes 2 and 3, between which is interposed an electrically nonconducting wick 4, which may be formed of ashes" tos or similar material. Conductors 5 and 6 extend from the electrodes 3 and 2, respectively, through the bottom '7 of the receptacle and then through appropriate openings in the lower side wall thereof, where the conductors are formed as twin terminals adapted to be received within the standard type of electrical socket.

Snugly mounted upon the top of the receptacle is a universal cover plate 10, so formed as to receive either the rectangular bottle 11 shown in Fig. 4, the round bottle 12 shown in Fig. 5, or the hexagonal bottle 13 which is shown in Fig. 6, the inner rim of the cover 10 being adapted toreceive each of the forms described and hold the same against excessive lateral movement, the

bottom in each case resting upon the upper surface of the upper electrode 2.

In operation, a conductor from a suitable source of current, such as the usual cord and socket, is attached to the extending terminals 5 and 6. A 5 suitable amount of water is then introduced into the receptacle, the water running off the domeshaped upper electrode 2 and into the wick 4, which is fitted snugly between the wall of the receptacle and the upper and lower electrodes, 10 which are in spaced relation. Before the introduction of water the circuit is open, but the water ,which flows into and through the wick closes the circuits between the electrodes 2 and 3, allowing the passage of current and thus instantly heat-- 5 ing and vaporizing a portion of the water be-= tween the electrodes. The vaporization continues, the steam rising from the space between the electrodes and escaping through the opening 14; in the upper electrode 2, and to some extent di- 20 rectly upward from the wick 4. This steam surrounds and contacts the bottle 15, resting upon the upper electrode, and heats the same, the excess steam escaping through the space between the bottle and the inner edge of the cover 10. The amount of water introduced into the receptacle may be proportioned to the volume of milk in the bottle 15 so that upon the complete evaporation of the water the bottle will have been brought to approximately the desired temperature, when it may he removed, although if allowed to stay in the receptacle the temperature of the bottle will not thereafter appreciably increase.

in Fig. 2 there is shown an attachment for the device hereinheiore described consisting of a cover 26 provided with a flange 21 fitting snugly over the edge portion of the cover 10 and having an upwardly projecting neck 22 terminating in an opening 23. The cover 20 is formed to adapt it to receive in inverted position a bottle 24 having its 40 necl: 25 mounted over the neck 22 of the cover 20 and its end resting upon the adjacent portion at the cover. The bottle in this position is adapted to receive the steam generated by the introduction of water into the container, and in this 45 way to be completely sterilized by the action of We therefore particularly point out and distinctly claim as our invention:--

1. In a device of the character described, the combination of a circular electrode. means for connecting said circular electrode to a source of current supply, a second electrode in the form of spaced arcuate elements mounted adjacent said first-named electrode and in spaced relation therewith, means connecting said arcuate elements to a source of current supply, and a continuous normally insulating wick disposed between said first and said second named-electrodes.

2. In a bottle warmer and sterilizer. the combination of a dome-shaped circular electrode having an outwardly extending base flange, means for connecting said circular electrode to a source of current supply, a pair of arcuate electrodes spaced from the base flange of said first electrode, means for connecting both of said arouate electrodes to a source of current supply, and an asbestos wick disposed between said first and second-named electrodes.

3. A bottle warmer and sterilizer comprising a cup-like receptacle and heating means disposed in the base of said receptacle, said heating means comprising a dome-shaped circular electrode adapted to support a bottle and provided with an outwardly extending base flange, a pair of arcshaped electrodes arranged concentrically ,with the axis of the flrst electrode and in spaced relation to the base flange thereof, a normally nonconducting wick disposed between said base flange and said arc-shaped electrodes, and means for conducting current to all of said electrodes.

MANUEL S. ZISKIN. VICTOR D. ZEVE. 

